Effects of pressure on biomass pyrolysis. II. Heats of reaction of cellulose pyrolysis

A Setaram DSC in conjunction with stainless steel pressure vessels was used to investigate the effects of pressure and purge gas flow rate (gas phase residence time) on the heat demands of cellulose pyrolysis. High pressure and low flow rate reduce the heat of pyrolysis and increase char formation....

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Bibliographic Details
Published in:Thermochimica acta 1983-10, Vol.68 (2), p.165-186
Main Authors: Mok, William S.-L., Antal, Michael J.
Format: Article
Language:English
Subjects:
Applied sciences
Cellulose and derivatives
Exact sciences and technology
Natural polymers
Physicochemistry of polymers
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Summary:A Setaram DSC in conjunction with stainless steel pressure vessels was used to investigate the effects of pressure and purge gas flow rate (gas phase residence time) on the heat demands of cellulose pyrolysis. High pressure and low flow rate reduce the heat of pyrolysis and increase char formation. Experiments were conducted to investigate the pyrolysis reactions of anhydrocellulose and levoglucosan, the two major intermediate products in cellulose pyrolysis. Separate models for the degradation of each intermediate were postulated and combined to form a detailed mechanistic model for cellulose pyrolysis. The model explains all the observed effects of pressure and flow rate.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(83)80222-6